Open AccessEffect of additional magnetic material Ni on structure and magnetic properties Eu2-xCexCu0.99Ni0.01O4+α-δ
Author(s) -
L P Rochman,
H D Anggia,
Rosaldi Pratama,
Trisna Maulana,
Suci Winarsih,
Yati Maryati,
Muhammad Abdan Syakuur,
Utami Widyaiswari,
Diah Permata Sari,
Togar Saragi,
Risdiana Risdiana
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2165/1/012020
Subject(s) - impurity , tetragonal crystal system , crystal structure , materials science , superconductivity , electrical resistivity and conductivity , analytical chemistry (journal) , annealing (glass) , magnetization , lattice constant , doping , crystallography , condensed matter physics , metallurgy , diffraction , chemistry , magnetic field , physics , optoelectronics , organic chemistry , engineering , chromatography , quantum mechanics , optics , electrical engineering
Superconductors are materials with the unique characteristics when the temperature of the material is below its critical temperature, namely zero resistivity. There are many superconducting phenomena that need to be explained theoretically. One of them is the effect of addition of impurities on the physical properties of superconducting materials. In this study, the addition of 0.01 Ni magnetic impurities in the Eu 2-x Ce x Cu O4+α-δ material has been carried out to form the structure Eu 2-x Ce x Cu 0.99 Ni 0.01 O 4+α-δ , in an under-doped area with a concentration of Ce (x) = 0.09 and 0.10. Material synthesis was carried out by the solid reaction method with prefire at 900 °C for 20 hours, sintering at 1,000 °C for 16 hours, and annealing at 900 °C for 10 hours by flowing argon (Ar) gas. The XRD measurements were carried out to investigate the crystal structure, while the magnetic properties were carried out by SQUID measurement at temperature of 2 K to 30 K. From the XRD measurements, it was found that the crystals formed had a tetragonal crystal structure T’ which was indicated by the appearance of two main peaks with Miller indices (103) and (110), lattice parameter a is 3,904 Å in both samples, lattice c is 11.8752 Å and 11.9738 Å for the concentrations of Ce (x) = 0.09 and 0.10. The volume of unit cells obtained were 181.0178 Å 3 and 181.0244 Å 3 with the bond distance between Cu-O of 1.9521 Å and 1.9523 Å. It was also obtained that the crystal size were 86.2604 nm and 91.6735 nm. From the SQUID measurement, it was found that the material Eu 2-x Ce x Cu 0.99 Ni 0.01 O 4+α-δ has paramagnetic properties. The value of the effective magnetic moment was decreased by reducing the addition of Ni impurities of 0.0057 and 0.0051.